tracing: Fix various typos in comments

Fix ~59 single-word typos in the tracing code comments, and fix
the grammar in a handful of places.

Link: https://lore.kernel.org/r/20210322224546.GA1981273@gmail.com
Link: https://lkml.kernel.org/r/20210323174935.GA4176821@gmail.com

Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>

arch/microblaze/include/asm/ftrace.h

@@ -13,7 +13,7 @@ extern void ftrace_call_graph(void);
 #endif
 
 #ifdef CONFIG_DYNAMIC_FTRACE
-/* reloction of mcount call site is the same as the address */
+/* relocation of mcount call site is the same as the address */
 static inline unsigned long ftrace_call_adjust(unsigned long addr)
 {
 	return addr;

arch/nds32/kernel/ftrace.c

@@ -236,7 +236,7 @@ void __naked return_to_handler(void)
 		"bal ftrace_return_to_handler\n\t"
 		"move $lp, $r0               \n\t"
 
-		/* restore state nedded by the ABI  */
+		/* restore state needed by the ABI  */
 		"lmw.bim $r0,[$sp],$r1,#0x0  \n\t");
 }
 

arch/powerpc/include/asm/ftrace.h

@@ -12,7 +12,7 @@
 
 #ifdef __ASSEMBLY__
 
-/* Based off of objdump optput from glibc */
+/* Based off of objdump output from glibc */
 
 #define MCOUNT_SAVE_FRAME			\
 	stwu	r1,-48(r1);			\
@@ -52,7 +52,7 @@ extern void _mcount(void);
 
 static inline unsigned long ftrace_call_adjust(unsigned long addr)
 {
-       /* reloction of mcount call site is the same as the address */
+       /* relocation of mcount call site is the same as the address */
        return addr;
 }
 

arch/sh/kernel/ftrace.c

@@ -67,7 +67,7 @@ static unsigned char *ftrace_call_replace(unsigned long ip, unsigned long addr)
  * Modifying code must take extra care. On an SMP machine, if
  * the code being modified is also being executed on another CPU
  * that CPU will have undefined results and possibly take a GPF.
- * We use kstop_machine to stop other CPUS from exectuing code.
+ * We use kstop_machine to stop other CPUS from executing code.
  * But this does not stop NMIs from happening. We still need
  * to protect against that. We separate out the modification of
  * the code to take care of this.

arch/sparc/include/asm/ftrace.h

@@ -17,7 +17,7 @@ void _mcount(void);
 #endif
 
 #ifdef CONFIG_DYNAMIC_FTRACE
-/* reloction of mcount call site is the same as the address */
+/* relocation of mcount call site is the same as the address */
 static inline unsigned long ftrace_call_adjust(unsigned long addr)
 {
 	return addr;

fs/tracefs/inode.c

@@ -477,7 +477,7 @@ struct dentry *tracefs_create_dir(const char *name, struct dentry *parent)
  *
  * The instances directory is special as it allows for mkdir and rmdir to
  * to be done by userspace. When a mkdir or rmdir is performed, the inode
- * locks are released and the methhods passed in (@mkdir and @rmdir) are
+ * locks are released and the methods passed in (@mkdir and @rmdir) are
  * called without locks and with the name of the directory being created
  * within the instances directory.
  *

include/linux/ftrace.h

@@ -33,7 +33,7 @@
 /*
  * If the arch's mcount caller does not support all of ftrace's
  * features, then it must call an indirect function that
- * does. Or at least does enough to prevent any unwelcomed side effects.
+ * does. Or at least does enough to prevent any unwelcome side effects.
  */
 #if !ARCH_SUPPORTS_FTRACE_OPS
 # define FTRACE_FORCE_LIST_FUNC 1
@@ -389,7 +389,7 @@ DECLARE_PER_CPU(int, disable_stack_tracer);
  */
 static inline void stack_tracer_disable(void)
 {
-	/* Preemption or interupts must be disabled */
+	/* Preemption or interrupts must be disabled */
 	if (IS_ENABLED(CONFIG_DEBUG_PREEMPT))
 		WARN_ON_ONCE(!preempt_count() || !irqs_disabled());
 	this_cpu_inc(disable_stack_tracer);

include/linux/trace_events.h

@@ -206,7 +206,7 @@ static inline unsigned int tracing_gen_ctx_dec(void)
 
 	trace_ctx = tracing_gen_ctx();
 	/*
-	 * Subtract one from the preeption counter if preemption is enabled,
+	 * Subtract one from the preemption counter if preemption is enabled,
 	 * see trace_event_buffer_reserve()for details.
 	 */
 	if (IS_ENABLED(CONFIG_PREEMPTION))

include/linux/tracepoint.h

@@ -465,7 +465,7 @@ static inline struct tracepoint *tracepoint_ptr_deref(tracepoint_ptr_t *p)
  *	*
  *	* The declared 'local variable' is called '__entry'
  *	*
- *	* __field(pid_t, prev_prid) is equivalent to a standard declariton:
+ *	* __field(pid_t, prev_prid) is equivalent to a standard declaration:
  *	*
  *	*	pid_t	prev_pid;
  *	*

include/trace/events/io_uring.h

@@ -49,7 +49,7 @@ TRACE_EVENT(io_uring_create,
 );
 
 /**
- * io_uring_register - called after a buffer/file/eventfd was succesfully
+ * io_uring_register - called after a buffer/file/eventfd was successfully
  * 					   registered for a ring
  *
  * @ctx:			pointer to a ring context structure

include/trace/events/rcu.h

@@ -48,7 +48,7 @@ TRACE_EVENT(rcu_utilization,
  * RCU flavor, the grace-period number, and a string identifying the
  * grace-period-related event as follows:
  *
- *	"AccReadyCB": CPU acclerates new callbacks to RCU_NEXT_READY_TAIL.
+ *	"AccReadyCB": CPU accelerates new callbacks to RCU_NEXT_READY_TAIL.
  *	"AccWaitCB": CPU accelerates new callbacks to RCU_WAIT_TAIL.
  *	"newreq": Request a new grace period.
  *	"start": Start a grace period.

include/trace/events/sched.h

@@ -174,7 +174,7 @@ DEFINE_EVENT(sched_wakeup_template, sched_waking,
 	     TP_ARGS(p));
 
 /*
- * Tracepoint called when the task is actually woken; p->state == TASK_RUNNNG.
+ * Tracepoint called when the task is actually woken; p->state == TASK_RUNNING.
  * It is not always called from the waking context.
  */
 DEFINE_EVENT(sched_wakeup_template, sched_wakeup,

include/trace/events/timer.h

@@ -119,7 +119,7 @@ TRACE_EVENT(timer_expire_entry,
  * When used in combination with the timer_expire_entry tracepoint we can
  * determine the runtime of the timer callback function.
  *
- * NOTE: Do NOT derefernce timer in TP_fast_assign. The pointer might
+ * NOTE: Do NOT dereference timer in TP_fast_assign. The pointer might
  * be invalid. We solely track the pointer.
  */
 DEFINE_EVENT(timer_class, timer_expire_exit,

kernel/trace/bpf_trace.c

@@ -658,7 +658,7 @@ BPF_CALL_5(bpf_seq_printf, struct seq_file *, m, char *, fmt, u32, fmt_size,
 		/* fmt[i] != 0 && fmt[last] == 0, so we can access fmt[i + 1] */
 		i++;
 
-		/* skip optional "[0 +-][num]" width formating field */
+		/* skip optional "[0 +-][num]" width formatting field */
 		while (fmt[i] == '0' || fmt[i] == '+'  || fmt[i] == '-' ||
 		       fmt[i] == ' ')
 			i++;
@@ -748,7 +748,8 @@ BPF_CALL_5(bpf_seq_printf, struct seq_file *, m, char *, fmt, u32, fmt_size,
 		fmt_cnt++;
 	}
 
-	/* Maximumly we can have MAX_SEQ_PRINTF_VARARGS parameter, just give
+	/*
+	 * The maximum we can have is MAX_SEQ_PRINTF_VARARGS parameters, so just give
 	 * all of them to seq_printf().
 	 */
 	seq_printf(m, fmt, params[0], params[1], params[2], params[3],

kernel/trace/fgraph.c

@@ -42,7 +42,7 @@ bool ftrace_graph_is_dead(void)
 }
 
 /**
- * ftrace_graph_stop - set to permanently disable function graph tracincg
+ * ftrace_graph_stop - set to permanently disable function graph tracing
  *
  * In case of an error int function graph tracing, this is called
  * to try to keep function graph tracing from causing any more harm.
@@ -117,7 +117,7 @@ int function_graph_enter(unsigned long ret, unsigned long func,
 
 	/*
 	 * Skip graph tracing if the return location is served by direct trampoline,
-	 * since call sequence and return addresses is unpredicatable anymore.
+	 * since call sequence and return addresses are unpredictable anyway.
 	 * Ex: BPF trampoline may call original function and may skip frame
 	 * depending on type of BPF programs attached.
 	 */

kernel/trace/ftrace.c

@@ -1045,7 +1045,7 @@ struct ftrace_ops global_ops = {
 };
 
 /*
- * Used by the stack undwinder to know about dynamic ftrace trampolines.
+ * Used by the stack unwinder to know about dynamic ftrace trampolines.
  */
 struct ftrace_ops *ftrace_ops_trampoline(unsigned long addr)
 {
@@ -3000,7 +3000,7 @@ int ftrace_shutdown(struct ftrace_ops *ops, int command)
 		 * When the kernel is preemptive, tasks can be preempted
 		 * while on a ftrace trampoline. Just scheduling a task on
 		 * a CPU is not good enough to flush them. Calling
-		 * synchornize_rcu_tasks() will wait for those tasks to
+		 * synchronize_rcu_tasks() will wait for those tasks to
 		 * execute and either schedule voluntarily or enter user space.
 		 */
 		if (IS_ENABLED(CONFIG_PREEMPTION))
@@ -5373,7 +5373,7 @@ EXPORT_SYMBOL_GPL(modify_ftrace_direct);
  * @reset - non zero to reset all filters before applying this filter.
  *
  * Filters denote which functions should be enabled when tracing is enabled
- * If @ip is NULL, it failes to update filter.
+ * If @ip is NULL, it fails to update filter.
  */
 int ftrace_set_filter_ip(struct ftrace_ops *ops, unsigned long ip,
 			 int remove, int reset)
@@ -6325,7 +6325,7 @@ clear_mod_from_hash(struct ftrace_page *pg, struct ftrace_hash *hash)
 	}
 }
 
-/* Clear any records from hashs */
+/* Clear any records from hashes */
 static void clear_mod_from_hashes(struct ftrace_page *pg)
 {
 	struct trace_array *tr;

kernel/trace/ring_buffer.c

@@ -3154,7 +3154,7 @@ rb_wakeups(struct trace_buffer *buffer, struct ring_buffer_per_cpu *cpu_buffer)
  * is called before preempt_count() is updated, since the check will
  * be on the NORMAL bit, the TRANSITION bit will then be set. If an
  * NMI then comes in, it will set the NMI bit, but when the NMI code
- * does the trace_recursive_unlock() it will clear the TRANSTION bit
+ * does the trace_recursive_unlock() it will clear the TRANSITION bit
  * and leave the NMI bit set. But this is fine, because the interrupt
  * code that set the TRANSITION bit will then clear the NMI bit when it
  * calls trace_recursive_unlock(). If another NMI comes in, it will

kernel/trace/synth_event_gen_test.c

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- * Test module for in-kernel sythetic event creation and generation.
+ * Test module for in-kernel synthetic event creation and generation.
  *
  * Copyright (C) 2019 Tom Zanussi <zanussi@kernel.org>
  */

kernel/trace/trace.c

@@ -514,7 +514,7 @@ void trace_free_pid_list(struct trace_pid_list *pid_list)
  * @filtered_pids: The list of pids to check
  * @search_pid: The PID to find in @filtered_pids
  *
- * Returns true if @search_pid is fonud in @filtered_pids, and false otherwis.
+ * Returns true if @search_pid is found in @filtered_pids, and false otherwise.
  */
 bool
 trace_find_filtered_pid(struct trace_pid_list *filtered_pids, pid_t search_pid)
@@ -545,7 +545,7 @@ trace_ignore_this_task(struct trace_pid_list *filtered_pids,
 		       struct task_struct *task)
 {
 	/*
-	 * If filterd_no_pids is not empty, and the task's pid is listed
+	 * If filtered_no_pids is not empty, and the task's pid is listed
 	 * in filtered_no_pids, then return true.
 	 * Otherwise, if filtered_pids is empty, that means we can
 	 * trace all tasks. If it has content, then only trace pids
@@ -612,7 +612,7 @@ void *trace_pid_next(struct trace_pid_list *pid_list, void *v, loff_t *pos)
 
 	(*pos)++;
 
-	/* pid already is +1 of the actual prevous bit */
+	/* pid already is +1 of the actual previous bit */
 	pid = find_next_bit(pid_list->pids, pid_list->pid_max, pid);
 
 	/* Return pid + 1 to allow zero to be represented */
@@ -834,7 +834,7 @@ DEFINE_MUTEX(trace_types_lock);
  * The content of events may become garbage if we allow other process consumes
  * these events concurrently:
  *   A) the page of the consumed events may become a normal page
- *      (not reader page) in ring buffer, and this page will be rewrited
+ *      (not reader page) in ring buffer, and this page will be rewritten
  *      by events producer.
  *   B) The page of the consumed events may become a page for splice_read,
  *      and this page will be returned to system.
@@ -1520,7 +1520,7 @@ unsigned long nsecs_to_usecs(unsigned long nsecs)
 #undef C
 #define C(a, b) b
 
-/* These must match the bit postions in trace_iterator_flags */
+/* These must match the bit positions in trace_iterator_flags */
 static const char *trace_options[] = {
 	TRACE_FLAGS
 	NULL
@@ -3368,7 +3368,7 @@ int trace_array_vprintk(struct trace_array *tr,
  * buffer (use trace_printk() for that), as writing into the top level
  * buffer should only have events that can be individually disabled.
  * trace_printk() is only used for debugging a kernel, and should not
- * be ever encorporated in normal use.
+ * be ever incorporated in normal use.
  *
  * trace_array_printk() can be used, as it will not add noise to the
  * top level tracing buffer.
@@ -7533,11 +7533,11 @@ static struct tracing_log_err *get_tracing_log_err(struct trace_array *tr)
  * @cmd: The tracing command that caused the error
  * @str: The string to position the caret at within @cmd
  *
- * Finds the position of the first occurence of @str within @cmd.  The
+ * Finds the position of the first occurrence of @str within @cmd.  The
  * return value can be passed to tracing_log_err() for caret placement
  * within @cmd.
  *
- * Returns the index within @cmd of the first occurence of @str or 0
+ * Returns the index within @cmd of the first occurrence of @str or 0
  * if @str was not found.
  */
 unsigned int err_pos(char *cmd, const char *str)
@@ -9320,7 +9320,7 @@ int tracing_init_dentry(void)
 	 * As there may still be users that expect the tracing
 	 * files to exist in debugfs/tracing, we must automount
 	 * the tracefs file system there, so older tools still
-	 * work with the newer kerenl.
+	 * work with the newer kernel.
 	 */
 	tr->dir = debugfs_create_automount("tracing", NULL,
 					   trace_automount, NULL);

kernel/trace/trace.h

@@ -1347,7 +1347,7 @@ __event_trigger_test_discard(struct trace_event_file *file,
 
 /**
  * event_trigger_unlock_commit - handle triggers and finish event commit
- * @file: The file pointer assoctiated to the event
+ * @file: The file pointer associated with the event
  * @buffer: The ring buffer that the event is being written to
  * @event: The event meta data in the ring buffer
  * @entry: The event itself
@@ -1374,7 +1374,7 @@ event_trigger_unlock_commit(struct trace_event_file *file,
 
 /**
  * event_trigger_unlock_commit_regs - handle triggers and finish event commit
- * @file: The file pointer assoctiated to the event
+ * @file: The file pointer associated with the event
  * @buffer: The ring buffer that the event is being written to
  * @event: The event meta data in the ring buffer
  * @entry: The event itself